having or showing an alert mind.

Origin of clearheaded

First recorded in 1700–10; clear + head + -ed3
Related formsclear·head·ed·ly, adverbclear·head·ed·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for clearheaded

Historical Examples of clearheaded

  • Thus I sat musing, as I venture to think, in a clearheaded way.

    The Frozen Pirate

    W. Clark Russell

  • He was so strong and so clearheaded, he could be such a wall if he chose.

    The Brimming Cup

    Dorothy Canfield Fisher

  • Clearheaded, simple-hearted, she had been always, and she was so still.

  • He wished somebody as clearheaded and as capable were unloading his boat.

    Tom Grogan

    F. Hopkinson Smith

  • Corporal Ralph Gregory had shown coolness and clearheaded courage, equal to the oldest and bravest.